Ok, so I see the term 3-bet thrown around all over the place.

Especially by you regs.

According to the definitions page... 3-bet is as follows:
3-Bet = to make the 2nd raise in limit poker

e.g. UTG+1 calls, MP1 raises, HERO 3-bets

So, please explain to me how 3-bet works in Full-Ring No Limit poker... since there are no defined betting limits, yet everyone seems to throw 3-bet around... what does it mean to 3-bet in no-limit?